3-Way Valve Actuator Motor For Saunier Duval Themafast C 28 E - Ref. 105901

Saunier Duval boilers compatible with reference S5720600

3-way valve with reference S5720600. 25 confirmed compatibilities: C 24 E and F 24 E.

Proven compatibility

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

How to check if ref. S5720600 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference S5720600. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms that require diagnosis in the 3-way valve S5720600

The 3-way valve diverts water between heating and domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The heating works, but the hot water takes a long time to come out, or the other way around.

  Cause: The motor does not turn enough towards the domestic hot water position and the gas valve takes time to switch the circuit.

  Open the hot water tap several times in a row and compare the times; if the delay is irregular, it may indicate a problem with the motor.

• 02

  The motor gets stuck and makes a straining noise when trying to switch modes.

  Cause: The wear of the internal gear prevents it from completing the travel, and the motor continues to strain.

  Listen to see if the noise occurs every time the boiler requests hot water; if it happens consistently, it may indicate a damaged motor rather than a one-time fault.

• 03

  The boiler shows an error or blockage related to the three-way valve on the display.

  Cause: The motor has a micro switch that informs the PCB if it has reached its position; if it does not reach it, the PCB registers the fault.

  Check the manual for your model to see which code corresponds to the three-way valve before purchasing, to avoid confusing it with another warning.

• 04

  The motor does not respond at all when the boiler requests a mode change.

  Cause: It could be that the winding is broken or that the motor has stopped receiving power.

  With the boiler unplugged, use a multimeter to check if the motor has continuity and if it receives voltage when the boiler attempts to switch modes.

These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.

Data sheet for the Saunier Duval S5720600 three-way valve.

Catalogue reference

S5720600

Uniclima internal SKU

MV3VTC28E

Brand

Saunier Duval

Type of part

3-way valves

Units in stock

7 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

Secondary code

105901

Nominal voltage

220-240V

Frequency

50/60 Hz

Temperature class

T70

Batch code or date

4712

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Saunier Duval F 28 E Manual (PDF) Document © Saunier Duval, provided as a technical reference.